US Patent No. 9,306,259

HORN ANTENNA FOR LAUNCHING ELECTROMAGNETIC SIGNAL FROM MICROSTRIP TO DIELECTRIC WAVEGUIDE


Patent No. 9,306,259
Issue Date April 05, 2016
Title Horn Antenna For Launching Electromagnetic Signal From Microstrip To Dielectric Waveguide
Inventorship Juan Alejandro Herbsommer, Allen, TX (US)
Hassan Ali, Murphy, TX (US)
Assignee TEXAS INSTRUMENTS INCORPORATED, Dallas, TX (US)

Claim of US Patent No. 9,306,259

1. A system comprising:
a multilayer substrate having multiple conductive layers separated by layers of insulation, the substrate including a horn
antenna with a narrow, waveguide portion, input end and a wider output end, the horn antenna being formed of the conductive
layers and the layers of insulation and including a top plate conductive layer, a bottom plate conductive layer, and densely
spaced vias forming vertical sidewalls of the horn antenna and waveguide portion by coupling adjacent edges of the top plate
and bottom plate, the horn antenna being trapezoidal and the waveguide portion being rectangular;

a microstrip line formed in one of the conductive layers adjacent the waveguide portion input end, the microstrip line having
a tapered portion that increases in width as it approaches the waveguide portion input end and the tapered portion not extending
into the waveguide portion; and

a ground plane formed in another one of the conductive layers at the waveguide portion input end.